Shot-hole scraper and tamper.



SHOT HOLE SGRAPER AND TAMPER. APPLICATION FILED SEPT. 1-, 1915.

1,309,127 Patented Apr. 29,1919. I

Urirran ST JOHN E. BITZ, or MOUNT PLEASANT TOWNSHIP, WTES'IMORELAND COUNTY, Penn- 7 SYLVALNIA.

SHOT-HOLE. SORAPELR. AND TAMPER.

To all whom it may concern:

Be it known that I, JOHN H. Brrz, a citizen of the United States, and resident of Brinkerton mine, Mount Pleasant township, in the county of Westmoreland and State of Pennsylvania, whose post-office address is R. F. D. No. 6, Greensburg, Pennsylvania, have invented certain new and useful Improvements in Shot-Hole Scrapers and Tampers, of which the following is a specification.

My invention relates to devices for use in connection with mining operations and has particular reference to a novel device which may be employed as a scraper for removing the drillings from horizontal shot holes and the other end of which tool may be employed as a tamper for powder.

It is common in coal and similar mining operations to drill long horizontal holes in the vein within which holes the powder for blasting purposes is inserted. After drilling, this hole should be cleaned out and after being cleaned out, the powder should be tamped into place. I have provided a simple tool which accomplishes both purposes. One end of the tool is in the form of a hoe having a pivoted blade whereby it may be readily inserted in the hole past the drillings while on the return movement the drillings are scraped out. The other end of the tool, the handle or shank of which is of wood, has a copper or brass ferrule, which serves to prevent abrasion of the shank when used as a tamper. The use of a soft or nonmagnetic material prevents the possibility of striking a spark and igniting the powder.

The invention Will be more readily understood by reference to the accompanying drawings, wherein Figure 1 is a longitudinal section through a shot hole, my novel device being shown in the act of scraping the drillings toward the open end of the hole;

Fig. 2 is a plan view of the device;

Fig. 3 is a side elevation of the entire tool,.and

Fig. 4 is a sectional view on the line 4-1 of Fig. 1.

Referring more particularly to the drawings, it will be seen that the device comprises Specification of Letters Patent.

Application filed September 7, 1916.

Patented Apr. 29, 1918).

Serial No. 118,920.

a wooden shank 10, to the reduced end portion 11 of which is secured the U-shaped strap 12, bent upon itself and secured by the rivets 13 to the shank. Near the head end of the strap is pivoted the blade 14, this blade being in the form of a semi-circle, as best shown in Fig. 4, having an extension or tongue 15 which lies between the two portions of the strap and terminates in the trunnions 16, which act as the pivots. The one end of the U-shaped strap 12 is in the form of a hook, that is, the portion 17 provides a shoulder or abutment against which the pivoted blade may rest when in the withdrawing position.

The opposite end of the shank is reduced in diameter and a brass or copper ferrule 18 is fitted thereon and held in place by a brass or copper rivet 19. This end of the tool is employed as the tamper, the ferrule preventing the distortion or abrasion of the end of the shank and the use of a soft or nonferrous metal or material preventing the striking of a spark which might ignite the powder.

Obviously the invention is capable of some modification and such modifications as are within the scope of my claims I consider within the spirit of my invention.

I claim:

1. A mining tool comprising, in combina tion, a bar forming a handle, said handle having a parallel sided strap on one end and a ferrule on the other, and a hinged blade on the strap end of the handle, said blade having a tongue on one edge extending between the sides of said strap, means for pivotally connecting said tongue to the strap, the outer end of said strap having a projection engaging with the blade to limit swinging movement of the blade in one di rection, and one edge of the blade having shoulders engaging with the strap to restrict swinging movement of the blade in the opposite direction.

2. A mining tool comprising, in combination, a bar forming a handle, said handle having a parallel sided U-shaped strap on one end thereof, and a hinged blade on the closed end of the U-shaped strap, said blade having a tongue on one edge extending between the sides of said strap, means for pivengaging with the strap to restrict swinging otally connecting said tongue to the strap, movement of the blade in the opposite directhe closed end of said strap having a projection.

tion engaging with the blade to limit swing- In testimony whereof I have hereunto set 10 ing movement of the blade in one direction, my hand. and one edge of the blade having shoulders JOHN H. BITZ.

Copies of this patent may be obtained for five cents each by addressing the Commissioner or Patents.

Washington, D. G. 

